Pulse or digital communications – Systems using alternating or pulsating current
Reexamination Certificate
2004-03-08
2008-03-11
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
C375S295000, C375S316000, C375S133000
Reexamination Certificate
active
07342972
ABSTRACT:
Techniques are described for synchronizing the timing of the receiver with the received waveform in ultra wideband (UWB) communication systems. The described techniques correlate the received waveform with dirty templates, i.e. segments of the received waveform, with the received waveform to estimate the timing offset. The described techniques include receiving an ultra wideband (UWB) waveform through a wireless communication channel, wherein the received UWB waveform comprises bursts of information-bearing symbols. A template is selected to be used for estimating the timing offset of a burst of the received UWB waveform, wherein the template comprises a segment of a burst of the received UWB waveform, and the template is correlated with a segment of a burst of the received waveform so as to form an estimate of the timing offset of the received UWB waveform. A stream of symbol estimates is output in accordance with the estimated timing offset.
REFERENCES:
patent: 6556621 (2003-04-01), Richards et al.
patent: 6744832 (2004-06-01), Miao
patent: 6925109 (2005-08-01), Richards et al.
patent: 7068715 (2006-06-01), Hoctor et al.
patent: 2001/0053175 (2001-12-01), Hoctor et al.
patent: 2003/0069025 (2003-04-01), Hoctor et al.
patent: 2003/0108133 (2003-06-01), Richards
patent: 2003/0198212 (2003-10-01), Hoctor et al.
patent: 2003/0198308 (2003-10-01), Hoctor et al.
patent: 2004/0156421 (2004-08-01), Yamaguchi
Z. Wang et al., “Block Precoding for MUI/ISI-Resilient Generalized Multicarrier CDMA with Multirate Capabilities,” IEEE Transactions on Communications, vol. 49, No. 11, pp. 2016-2027, Nov. 2001.
F. Ramirez-Mireles et al., “System Performance Analysis of Impulse Radio Modulation,” Proceedings Radio Wireless Conference, Colorado Springs, CO, pp. 67-70, Aug. 1998.
M. Win et al., “Ultra-Wide Bandwidth Time-Hopping Spread-Spectrum Impulse Radio for Wireless Multiple-Access Communications,” IEEE Transactions on Communications, vol. 48, No. 4, pp. 679-691, Apr. 2000.
A. Saleh et al., “A Statistical Model for Indoor Multipath Propagation,” IEEE Journal on Selected Areas in Communications, vol. SAC-5, No. 2, pp. 128-137, Feb. 1987.
B. Hassibi et al., “On the Expected Complexity of Sphere Decoding,” Proceedings of the Asilomar Conference on Signals, Systems and Computers, vol. 2, pp. 1051-1055, 2001.
B. Hochwald et al., “Unitary Space-Time Modulation for Multiple-Antenna Communications in Rayleigh Flat Fading,” IEEE Transactions on Information Theory, vol. 46, No. 2, pp. 543-564, Mar. 2000.
C. Le Martret et al., “All-Digital PPM Impulse Radio for Multiple-Access Through Frequency-Selective Multipath,” Procedures of GLOBECOM, vol. 1, pp. 22-26, San Francisco, CA, Nov. 17-Dec. 1, 2000.
C.J. Le Martret et al., “All-Digital Impulse Radio with Multiuser Detection for Wireless Cellular Systems,” IEEE Transactions on Communications, vol. 50, No. 9, pp. 1440-1450, Sep. 2002.
C.J. Le Martret et al., “All-Digital PAM Impulse Radio for Multiple-Access Through Frequency-Selective Multipath,” Procedure of Sensor Array and Multichannel Signal Processing Workshop, Boston, pp. 77-81, Mar. 2000.
D. Cassioli et al., “Performance of Low-Complexity Rake Reception in a Realistic UWB Channel,” 2002 IEEE International Conference on Communications, pp. 763-767, New York City, N.Y., Apr. 28-May 2, 2002.
E. Homier et al., “Rapid Acquisition of Ultra-Wideband Signals in the Dense Multipath Channel,” G.E Research Development Center, Technical Information Series, pp. 105-109, Jan. 2002.
F. Gini et al., “Frequency Offset and Symbol Timing Recovery in Flat-Fading Channels: A Cyclostationary Approach,” IEEE Transactions On Communications, vol. 46, No. 3, pp. 400-411, Mar. 1998.
F. Ramirez-Mireles et al., “Multiple Access With Time-Hopping and Block Waveform PPM Modulation,” 1998 IEEE International Conference on Communications, vol. 2 of 3, pp. 775-779, Atlanta, Georgia, Jun. 1998.
G. Leus et al., “MUI-Free Receiver for a Synchronous DS-CDMA System Based on Block Spreading in the Presence of Frequency-Selective Fading,” IEEE Transactions on Signal Processing, vol. 48, No. 11, pp. 3175-3188, Nov. 2000.
G.B. Giannakis et al., “AMOUR-Generalized Multicarrier Transceivers for Blind CDMA Regardless of Multipath,” IEEE Transactions on Communications, vol. 48, No. 12, pp. 2064-2076, Dec. 2000.
H. Lee et al., “Multipath Characteristics of Impulse Radio Channels,” 2000 IEEE 51stVehicular Technology Conference Proceedings, Tokyo, Japan, pp. 2487-2491, May 15-18, 2000.
J.D. Choi et al., “Performance of Autocorrelation Receivers for Ultra-Wideband Communications with PPM in Multipath Channels,” 2002 IEEE Conference on Ultra Wideband Systems and Technologies, pp. 213-217, Baltimore, MD, USA, May 2002.
J.D. Choi et al., “Perfomance of Ultra-Wideband Communications With Suboptimal Receivers in Multipath Channels,” IEEE Journal on Selected Areas in Communications, vol. 20, No. 9, pp. 1754-1766, Dec. 2002.
J.K. Cavers, “An Analysis of Pilot Symbol Assisted Modulation for Rayleigh Fading Channels,” IEEE Transactions On Vehicular Technology, vol. 40, No. 4, pp. 686-693, Nov. 1991.
J.R. Foerster, “The Effects of Multipath Interference on the Performance of UWB Systems in and Indoor Wireless Channel,” IEEE VTS 53rdVehicular Technology Conference, vol. 2, pp. 1176-1180, Rhodes, Greece, May 6-9, 2001.
J.R. Foerster et al., “Ultra-Wideband Technology for Short- or Medium-Range Wireless Communications,” Ultra-Wideband Technology for Short- or Medium-Range Wireless Communications, pp. 1-11, Apr. 2001.
K.Siwiak et al., “Ultra-Wide Band Radio: The Emergence of An Important New Technology,” IEEE VTS 53rdVehicular Technology Conference, vol. 2, pp. 1169-1172, Rhodes, Greece, May 6-9, 2001.
L. Yang et al., “Multistage Block-Spreading for Impulse Radio Multiple Access Through ISI Channels,” IEEE Journal on Selected Areas in Communications, vol. 20, No. 9, pp. 1767-1777, Dec. 2002.
L. Yang et al., “Space-Time Coding for Impulse Radio,” 2002 IEEE Conference on Ultra Wideband Systems and Technologies, pp. 235-239, Baltimore, MN, May 20-23, 2002.
L. Yang et al., “Impulse Radio Muliple Access Through ISI Channels With Multi-Stage Block-Spreading” 2002 IEEE Conference on Ultra Wideband Systems and Technologies, pp. 277-281, Baltimore, MD, May 21-23, 2002.
L. Yang et al., “Optimal Pilot Waveform Assisted Modulation for Ultrawideband Communications,” IEEE Transactions on Wireless Communications, vol. 3, No. 4, pp. 1236-1349, Jul. 2004.
L. Yang et al., “Non-Data Aided Timing Acquisition of Ultra-Wideband Transmissions Using Cyclostationarity,” 2003 IEEE International Conference on Acoustics, Speech and Signal Processing, Hong Kong, vol. IV of VI, Apr. 6-10, 2003.
M.Z. Win et al., “Impulse Radio: How it Works,” IEEE Communications Letters, vol. 2, No. 2, pp. 36-38, Feb. 1998.
M.L. Welborn, “System Considerations for Ultra-Wideband Wireless Networks,” 2001 IEEE Radio and Wireless Conference, pp. 5-8, Boston, MA, Aug. 19-22, 2001.
M.Z. Win et al., “On the Energy Capture of Ultrawide Bandwidth Signals in Dense Multipath Environments,” IEEE Communications Letters, vol. 2, No. 9, pp. 245-247, Sep. 1998.
M.Z. Win et al., “Virtual Path Analysis of Selective Rake Receiver in Dense Multipath Channels,” IEEE Communications Letters, vol. 3, No. 11, pp. 308-310, Nov. 1999.
M.Z. Win et al., “ATM-Based TH-SSMA Network for Multimedia PCS,” IEEE Journal on Selected Areas in Communications, vol. 17, No. 5, pp. 824-836, May 1999.
O. Wintzell et al., “On the Capacity of a Pulse-Position-Hopped CDMA System,” IEEE Transactions On Information Theory, vol. 47, No. 6, pp. 2639-2644, Sep. 2001.
P. Withington, II et al., “An I
Giannakis Georgios B.
Yang Liuqing
Ghayour Mohammed
Regents of the University of Minnesota
Shumaker & Sieffert PA
Torres Juan Alberto
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